Ice-cream freezer



C. A. BALLREICH ICE CREAM FREEZER Filed Feb. 9. 1925 Dec. 27, 1927.

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Patented Dec. 27, 1927.

UHARLES A. BALLREICH, 0F LOS ANGELES, CALIFORNIA.

ICE-CREAM FREEZER.

Application filed February 9, 1926. Serial No. 86,982.

This invention has to do generally With ice-cream freezers and is moreparticularly concerned ivithinvertible type freezers, that is, freezerswhich include casing-s opening` at one end for the introduction andremoval of freezing initnure, and opening at the other `endl for "theintroduction of the rniir ture tohe frozen and subseipient removal ofthe frozen nurture; the freezers being in vertible whereby the openingat either end may be rendered accessible.

Such a structure embodies the use oi an internal creani container orcylinder Whose openable end is `accessible frein one end of the casingof the freezer vf ile the closed end of the cylinder is oppor te butspaced frein that end of the casing through which the freezingl mixtureis introduced. This spacing; is provided in order *that the frees in@inizrture (for instance, ice and salt) may be passed into and packedwithin the un nular compartment defined. by the ice crealo cylinder andthe casing.

In 'the usual. freezer of this type, the open end of the ice creaincylinder secured to the outer casing, and since the annular spacebetween casingl and cylinder extends substantially the length of thecasing and is of comparatively little Width, it is almost inipossiblethoroughly to clean or dry the Walls dclining this space, especiallynear the oint between casing and cylinder, This not only leads to acondition iwhich unsanitary, but is also harmful to the freezer, for thecorrosive action of such brine as inay be left in the freezer betweenperiods of operation is rapid and the usful life of the freezer istherefore materially reduced.

Furthermore, 4with the cylinder rigidly at tached to the casing, theentire freezer inust he handled each time ice creani is ladledtherefrom, and While the cylinder is being cleaned. The freezer beingIcomparatively bulky and heavy, this necessity requires of the user veryconsiderable Wasted effort, and since freezers of this type areprimarily in tended for heine 'use and hence inust often he handled byWeinen, the diiliculty of handling there citen precludes their use.

Therefore, it is among the objects of the present invention .to providea freezer of the general type described above, but which shall have noneof the clisadvantageous features mentioned. To this end, I haveconstructed the freezer so the ice cream cylinder is readily removablefrein the casinm Then when ice creainis to be ladled freni the cylinder.the cylinder only need be hainlled. r, A er the cream containerWithdrawn frein '..ie freezer, it niay be 'very slightly v" 1ined. tofree the irozcn creare from. the sid l f whereupon the entire block ci:er slipped out in the form of a solid cy. and cut .into slices for thetable. hlatural'y, with the cylinder and casing separable, both may becleaned, scalded, and dried easily and with thoroughness.

The manner of detaehahly connec p,

cylinder to the casi" w the preferred. ,ipe of closures for the casingand cylinder open ings, and other objects and novel features of the.invention may be described to bei' ad vantage in connection with thefollowA L detailed. specification, reference beine; lade to theaccompanying drawings, in vinca.:

Fig. l a .side elevation of a freezer ein-- 'Iiodying .my invention,certain of the .loch wings being,- shown in section;

Fig. 2 is u top, plan view thereof; and

Fig. 3 is a section on .liuc Ilm-2l of Wipe il.

In the drawings, I have shown a "er n ade up primarily of a cylindricalcan and a cream container or cylinder ll wh' adapted to be detachablyheld. within tho casing and in coaxial relation therewith.. lit ishighly desi niels, though not essfcntia to the invention as consideredin its ln'oader aspeetathat the casingr have the properties of a heatinsulator and this condition may he brought `about in any suitableinanncr. r instance, the casing may be of double il construction with alayer of coi'h or the lilre interposed between thc vullu Ui., as shownin the drawings, the cas. may be .uuiule up `of an .outer wall or s icllconsi tube l2 and end rings or heads ld, Lmnd an inner Wall or shell i5,thc ends lll of l5 being soldered or otherwise s sealed to plates 1.3,ifi; so a dead air, insulating space 17 is provided..

Heads 13 and le are centrally aperturod to provide mouths 18 and fill,.mouth lo preferably being somewhat larger than inout., i8 and providingan opening,1 throup the freezer is charged with the freczii it in. ture..'llherefcre, inouth 19 nitty he be referred to as a clizirgiligglinouti. Cream cylinder 1l has a closed end while its open end 2]. isprovided `with n external peripheral flange 22. The cylinder is of suchdiameter that it may ea 'ly be passed through mouth 18 to and freni theheat Sii

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position indicated in Fig. 3, flange 22, however, being of such diameterthat it well overhangs head 13-about the mouth 18. Preferably, there isprovided a asket 23 around the cylinder between hea -13 andv The innershell or wall 15 of casing lO'is of such diameter throughout the majorporforeign matter may gather between periods of operation, or, in otherwords, rendering it more easily possible to clean and dry the inner wallof the casing thoroughly.

Mouth 19 is adapted to be closed by a removable cap 25. This cap ispreferably ofv double'wall construction, there being a dead airspace 26between walls or disk-like plates 27 and 28 to act as a heat insulator.Plates 27 and 28 are joined by ring 29 which is adapted to t withinmouth 19 as a plug.

Outer plate 28 has an annular flange 3() extending beyond ring 29 and agasket 31 on ring 29 is adapted to be pressed'between flange 30 and head14 to make a tight closure between the cap and the casing. While anysuitable means'may be used for pressing the'cap tightly upon the endplate and for holding it detachably in such a position, I prefer to usethe wing and keeper device illustrated, this being an efficient yetrelatively cheaply constructed expedient. This wing and keeperconstruction provided in connection with wall 14 and cap 25 is typicalof the locking means employed for holding cylinder 11 within the casingand for holding the cap 32, cylinder 11 and casing 10 detachably inassembly, therefore, the following description of a single wing andkeeper lock will suffice. There are preferably four locking elements orwings 33 which yextend radially from flange 30 and are preferablyangularly spaced about 900, while complementarily spaced opposed lockingelements or keepers 34 are securedto end plate 14. Each of these keepersis shown as being made up f of avbase-35 secured at 36 to plate 14, andan upright portion 37 turned outwardly from the base vand having ahorizontally extending tongue portion 38l which provides an inwardlyfacingA shoulder 39 spaced from head 14'and inclining from the'tip ofthe tongue toward the base and standard portions. The tongues of algivenpair of keepers point in opposite directions so wings 33 may besimultaneously swung beneath or from beneath the tongues by rotation ofthe cap, wings 33 preferably being curved away from end 14 as at 33awhereby they may be more readily grasped for manipulation. Due to theinclination of shoulders 39, the further the wings are rotated beneaththe tongues, the tighter will gasket 31 be pressed beneath flange 30 andhead 14 and the wings are, of course, frictionally held fromunintentional disengagen'ient from the keepers.

Fla-nge 22 of cylinder 11 is provided with diametrically opposite wings40 which are similar to wings and are adapted to be rotated into and outof engagement with keepers 41 which are secured to head 13 and aresimilar to keepers 34. By rotatively engaging keepers 41 and wings 40,gasket 23 is compressed between head 13 and flange 22 to insure a tightjoint.

Cap 32 for cylinder 11 is preferably constructed similarly to cap 25,disk-like plates 42 and 43 being spaced apartvby ring 44 to provide heatinsulating space 45 and plate 42 having a flange 4G from which extenddiametrically opposite radial wings 47 which are similar to wings 33. Agasket 48 on ring 44 is adapted to be compressed between flanges 46 and23 when wings 47 are rotated into engagement with keepers 49, the latterbeing similar to keepers 34. Ring 44, of course, lits comparativelysnugly within cylinder 11. Keepers 41 and 49 are preferably angularlyspaced Thus, it will be seen that the cylinder is held to the casing bydetachable means which are independent of the means for holding the cap32 to the cylinder, but it will be understood that in certainsituations, I may rely only upon keepers 49 and wings 47 for holding thecasing, cylinder and cylinder cap 32 in assembly, since pressure tendingto hold the cap closely against cylinder flange 22 also tends to holdsaid flange against head 13. However, it is preferable that independentmeans be provided for holding the cylin- 'der and cap in order that thecylinder may not become accidentally displaced when cap 32 is removedtherefrom.

It will be seen that the cylinder may be readily and quickly connectedto or detached from theV casing so both casing and cylinder may beeasily cleaned and dried with thoroughness and so cream may be removedfrom the cylinder without the necessity of handling the casing. Withboth the cylinder and cap 25 removed, it will be seen that the entireinterior of the casing is accessible for the cleaning and dryingoperation.

lVhen the cylinder is in place with the casing, it will be seen that dueto the flange and gasket connection therebetween, there is no likelihoodof the brine becoming accidentally mixed with the contents of thecylinder, even llO when the freezer is inverted during or after theintroduction of a freezing mixture to chamber 24.

ln order thatthe freezer may be easily turned end for end and carriedfrom place to place, l preferably provide an annular bead or rib 50about casing 10, this bead being most easily formed by pressing shell 12outwardly as clearly shown in Fig. 3.

The keepers at opposite ends of the casing provide legs for the freezerin either of its tivo positions, and by holding the casing heads andclosure caps slightly elevated above the floor or supporting base, dolnuch to protect said heads and caps, as Will be readily understood.

It Will be understood the drawings and description are to be consideredmerely as illustrative of and not restrictive on the broader claimsappended hereto, for various changes in design, structure andarrangement may be made Without departing from the spirit and scope ofsaid claims.

I clialn:

l. In an ice cream freezer, a casing, top and bottoni heads for theeasing, each of said heads having openings therein, ay cream containerhaving an open end removably mounted in. said. casing and spaced fromthe side and bottoni to provide a freezing mixture space, the containerbeing of such size as to pass through the opening in the top head of thecasing, a flange on the container adapted to rest on the top head of thecasing, a elosure for the open end of the container, and fasteningineans on the exterior of the top head of the casing cooperating Withthe con tainer flange and With the closure for holding the container inthe casing and fastening the cover thereon.

2. In an ice crearn freezer, an outer casing having an opening at bothends, a removable cream container'liaving a flange at its upper endadapted to be inserted into the casing through the opening in one endwith its fiange resting on the top of the casing, and its side andbottoni Walls spaced from the casing, a closure for said container,pairs of lugs carried by said container flange and said closure, andlatch ineinbers carried by said casing top and cooperating with the lugson the container flange and the closure for holding the saine inposition.

In Witness that I claim the foregoing I have hereunto subscribed mynaine this 13th day of January, 1926.

CHARLES A. BALLREICH.

